diff --git a/pyproject.toml b/pyproject.toml
index 3d6431a..3b045fd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,12 +21,11 @@ classifiers = [
 ]
 
 [tool.poetry.dependencies]
-numpy = "^1.23.1"
-pandas = "^1.4.3"
+numpy = ">=1.23.1"
 pydantic = ">=1.9.1,<2.3"
 python = ">=3.10,<3.12"
-requests = "^2.28.1"
-scipy = "^1.9.0"
+requests = ">=2.28.1"
+scipy = ">=1.9.0"
 
 [tool.poetry.group.dev.dependencies]
 black = "^23.7.0"
@@ -39,7 +38,7 @@ pre-commit = "^2.19.0"
 pytest = "^7.1"
 pytest-cov = "^3.0"
 pytest-mock = "^3.10.0"
-types-requests = "^2.28.6"
+types-requests = ">=2.28.6"
 
 [tool.black]
 line-length = 88